Improvement in padlocks



r. EGG'E.

Pad-Locks.

No 153 058. V Pat-entedJu.|y14,1874.

W1 TNESSEJ'; INVENTOR:

ym/2%? I I 5% YHE GRAPHIC GO. FHOTOIJTH-Qfll 4| PARK PLACE, KY.

UNITED STATES PATENT OFFICE.

FREDRICK EGGE, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR OF ONE-HALF HISRIGHT TO FRIEND W. SMITH, OF SAME PLACE.

IMPROVEMENT IN PADLOCKS.

Specification forming part of Letters Patent No. 153,058, dated July 14,1874; application filed May 28, 1874.

To all whom t't'may concern:

le it known that I, FREDRIOK Econ, of Bridgeport, in the county ofFairfield and in the State of Connecticut, have invented certain new anduseful Improvements in Padlocks; and do hereby declare that the following is a full, clear, and exact description thereof, reference being hadto the accompanying drawings, and to the letters ofreference markedthereon, making a part of this specification.

My invention relates to that class of padlocks in which one or morespring-tumblers are required to be moved to certain positions before thebolt or hasp can be withdrawn, and is an improvement on the lock forwhich Letters Patent were granted me by the United States December 23,1873, No. 145,853.

My invention consists in the construction and arrangement of the partsof the padlock, as more fully set forth.

By referring to the accompanying drawings I am able to illustrate myinvention with more clearness.

Figure 1 represents the position of the parts when unlocked. Fig. 2represents the position of the parts when locked. Fig. 3 represents themovement of the lock lifted out of the case or shell; Fig. 4, anelevation of the lock; Figs. 5 and 6, a side and edge view of the key;Fig. 7, an edge view of the look.

A is the shackle or hasp, pivoted at b. B is the lower arm of theshackle, extending into the interior of the lock, and having a 1011-gitudinal recess 0n the inner side. The recess is indicated by thedotted lines. C is the tumblers, fastened into the recess by the pin a,which passes through the tumblers and takes into the upper and lowersides of the recess. The springs which actuate the tumblers, and

- also the shackle, arefastened into theirrespective tumblers at theproper point for giving the necessary action, and pass around the heelof the tumblers, and their ends rest, as represented in the drawings,against the projection c of the hub, and throw out the shackle when itis in position to unlock. D is a fixed stud or stump, made to match theslots in the tumblers C, and against which the face of the tumblers restwhen the lock is locked, and

stud D. The lifting of the tumblers crowds the springs against theprojection c of the hub of the shackle with such force that, as soon asthe fixed stud and slots in the tumblers are brought in range with eachother, the tumblers straddling the stump D are moved to ward the centerof the lock until their inner surfaces at the end of the slots abutagainst the stump. This action necessarily and simultaneously moves theother end of the shackle in the opposite direction, and the lock is thusopened.

The shell or case may be made of sheet metal struck up in two parts; orit may be cast from patterns. The lock is not necessarily round, but maybe made any other shape that is desirable. The entrance for the key isfrom the bottom of the case, and the key itself is made of sheet'steel,and is flat. A barrelkey might, however, be used with the entrance atthe side of the case. The tumblers, also, instead of being held by a pinto the shackle, might be united thereto in some other way by any jointthat would give the required motion.

Having thus described my invention and illustrated all the parts fully,I will proceed to mention what I consider new, and for which I desireLetters Patent of the United States:

The combination, with a padlock-case provided with the stud D, of theshackle A, having extended bifurcated arm B, a series of slottedtumblers, C, pivoted in the bifurcated extremity of the arm, and acorresponding series of springs, c, secured therein, all substantiallyas set forth.

' In testimony that I claim the foregoing I have hereunto set my handthis 13th day of May, 187 4.

FREDBICK EGGE.

Witnesses:

HERMAN GAUss, EDWARD H. LYON.

